Disk mounting system for wheel calculator the like and method of making same
AssigneeThe Flexi/Group, Inc.
InventorHoward M. Bromberg
Life of this patent
Estimating the term…
Abstract
A disk is mounted upon a substrate of sheet material with a separate piece also of sheet material secured to the substrate and having at least a pair of strips overhanging the disk and of a length sufficient to lie flat thereagainst. The strips define a number of points at which the inner circumference of the disk is engaged and with a spacing a=Dsin (180.degree./n).+-.25% where D is the diameter of the opening and n is the number of disk overhanging strips. When two strips are provided the applicable formula is a=Dsin (180.degree./4).+-.25% where D is said diameter of said opening.
Claims22
A method of mounting an annular disk having a central opening with a given inner diameter upon a substrate, comprising the steps of:
- (a) providing upon a substrate of sheet material at least two elongated strips of sheet material continuous with one another, separate from said substrate, and affixed to said substrate, said strips at said substrate forming at least three points defining vertices of a polygon which can be circumscribed by a circle of a diameter corresponding to said inner diameter;
- and
- (b) mounting said annular disk upon said substrate so that said strips pass through said opening and extend outwardly over said disk for a length exceeding a spacing between said vertices, thereby enabling rotation of said disk centered by engagement of an inner periphery thereof at said points, said strips being threaded through slits formed in said substrate.
A wheel assembly, comprising:
- a substrate composed of sheet material;
- at least two elongated strips of sheet material continuous with one another, separate from said substrate, and affixed to said substrate, said strips forming at least three points at vertices of a polygon which can be circumscribed by a circle of a given diameter;
- and
- an annular disk of sheet material having a central opening of an inner diameter corresponding to said given diameter and mounted upon said substrate by said strips so that said strips pass through said opening and extend over said disk for lengths exceeding a spacing between said vertices, thereby enabling rotation of said disk centered by engagement of an inner periphery thereof at said points, said strips protruding through slits in said substrate from a side thereof opposite a side of said substrate at which said disk is mounted.
A method of mounting an annular disk having a central opening with a given inner diameter upon a substrate, comprising the steps of:
- (a) applying with an adhesive to a substrate of sheet material a mounting web of sheet material having at least two elongated strips of sheet material continuous with and in one piece with one another and with said web, separate from said substrate, and affixed to said substrate, said strips at said substrate forming at least three points defining vertices of a polygon which can be circumscribed by a circle of a diameter corresponding to said inner diameter, said web having a width between said strips substantially corresponding to a width of said strips;
- and
- (b) mounting said annular disk upon said substrate so that said strips pass through said opening and extend outwardly over said disk for a length exceeding a spacing between said vertices, thereby enabling rotation of said disk centered by engagement of an inner periphery thereof at said points.
A wheel assembly, comprising:
- a substrate composed of sheet material;
- at least two elongated strips of sheet material continuous with one another, separate from said substrate, and adhesively affixed to said substrate by a central web formed in one piece with said strips and disposed between them, said strips forming at least three points at vertices of a polygon which can be circumscribed by a circle of a given diameter, said web having a width between said strips substantially corresponding to a width of said strips;
- and
- an annular disk of sheet material having a central opening of an inner diameter corresponding to said given diameter and mounted upon said substrate by said strips so that said strips pass through said opening and extend over said disk for lengths exceeding a spacing between said vertices, thereby enabling rotation of said disk centered by engagement of an inner periphery thereof at said points.
Dependencies are inferred from the claim text.